From ad547a6b5986815fda458221149728d9d9ab1d87 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Thu, 25 Feb 2021 19:22:25 +0000 Subject: restore Build,TODO from r57911 git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751 --- .../source/texk/web2c/luatexdir/tex/equivalents.h | 916 +++++++++++++++++++++ 1 file changed, 916 insertions(+) create mode 100644 Build/source/texk/web2c/luatexdir/tex/equivalents.h (limited to 'Build/source/texk/web2c/luatexdir/tex/equivalents.h') diff --git a/Build/source/texk/web2c/luatexdir/tex/equivalents.h b/Build/source/texk/web2c/luatexdir/tex/equivalents.h new file mode 100644 index 00000000000..83117c64fa1 --- /dev/null +++ b/Build/source/texk/web2c/luatexdir/tex/equivalents.h @@ -0,0 +1,916 @@ +/* equivalents.h + + Copyright 2009 Taco Hoekwater + + This file is part of LuaTeX. + + LuaTeX is free software; you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + LuaTeX is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + License for more details. + + You should have received a copy of the GNU General Public License along + with LuaTeX; if not, see . +*/ + +#ifndef EQUIVALENTS_H +# define EQUIVALENTS_H + +/* + +Like the preceding parameters, the following quantities can be changed at compile +time to extend or reduce \TeX's capacity. But if they are changed, it is +necessary to rerun the initialization program \.{INITEX} @.INITEX@> to generate +new tables for the production \TeX\ program. One can't simply make helter-skelter +changes to the following constants, since certain rather complex initialization +numbers are computed from them. They are defined here using \.{WEB} macros, +instead of being put into \PASCAL's |const| list, in order to emphasize this +distinction. + +*/ + +# define font_base 0 /* smallest internal font number; must not be less than |min_quarterword| */ +# define biggest_reg 65535 /* the largest allowed register number; must be |< max_quarterword| */ +# define number_regs 65536 /* |biggest_reg+1| */ +# define number_attrs 65536 /* total numbeer of attributes */ +# define biggest_char 1114111 /* 0x10FFFF, the largest allowed character number; must be |< max_halfword| */ +# define too_big_char (biggest_char+1) /* 1114112, |biggest_char+1| */ +# define special_char (biggest_char+2) /* 1114113, |biggest_char+2| */ +# define number_chars (biggest_char+3) /* 1114112, |biggest_char+1| */ +# define number_fonts (5535-font_base+1) +# define biggest_lang 32767 +# define too_big_lang 32768 +# define text_size 0 /* size code for the largest size in a family */ +# define script_size 1 /* size code for the medium size in a family */ +# define script_script_size 2 /* size code for the smallest size in a family */ + +/* + +Each entry in |eqtb| is a |memory_word|. Most of these words are of type +|two_halves|, and subdivided into three fields: + +\yskip\hangg 1) The |eq_level| (a quarterword) is the level of grouping at which +this equivalent was defined. If the level is |level_zero|, the equivalent has +never been defined; |level_one| refers to the outer level (outside of all +groups), and this level is also used for global definitions that never go away. +Higher levels are for equivalents that will disappear at the end of their group. +@^global definitions@> + +\yskip\hangg 2) The |eq_type| (another quarterword) specifies what kind of entry +this is. There are many types, since each \TeX\ primitive like \.{\\hbox}, +\.{\\def}, etc., has its own special code. The list of command codes above +includes all possible settings of the |eq_type| field. + +\yskip\hangg 3) The |equiv| (a halfword) is the current equivalent value. This +may be a font number, a pointer into |mem|, or a variety of other things. + +Many locations in |eqtb| have symbolic names. The purpose of the next paragraphs +is to define these names, and to set up the initial values of the equivalents. + +In the first region we have a single entry for the `null csname' of length zero. +In luatex, the active characters and and single-letter control sequence names are +part of the next region. + +Then comes region~2, which corresponds to the hash table that we will define +later. The maximum address in this region is used for a dummy control sequence +that is perpetually undefined. There also are several locations for control +sequences that are perpetually defined (since they are used in error recovery). + +@ Region 3 of |eqtb| contains the |number_regs| \.{\\skip} registers, as well as +the glue parameters defined here. It is important that the ``muskip'' parameters +have larger numbers than the others. + +@ Region 4 of |eqtb| contains the local quantities defined here. The bulk of this +region is taken up by five tables that are indexed by eight-bit characters; these +tables are important to both the syntactic and semantic portions of \TeX. There +are also a bunch of special things like font and token parameters, as well as the +tables of \.{\\toks} and \.{\\box} registers. + +@ Region 5 of |eqtb| contains the integer parameters and registers defined here, +as well as the |del_code| table. The latter table differs from the +|cat_code..math_code| tables that precede it, since delimiter codes are fullword +integers while the other kinds of codes occupy at most a halfword. This is what +makes region~5 different from region~4. We will store the |eq_level| information +in an auxiliary array of quarterwords that will be defined later. + +@ The integer parameters should really be initialized by a macro package; the +following initialization does the minimum to keep \TeX\ from complete failure. + +@^null delimiter@> + +@ The final region of |eqtb| contains the dimension parameters defined here, and +the |number_regs| \.{\\dimen} registers. + +*/ + +# define null_cs 1 /* equivalent of \.{\\csname\\endcsname} */ +# define hash_base (null_cs+1) /* beginning of region 2, for the hash table */ +# define frozen_control_sequence (hash_base+hash_size) /* for error recovery */ +# define frozen_protection (frozen_control_sequence) /* inaccessible but definable */ +# define frozen_cr (frozen_control_sequence+1) /* permanent `\.{\\cr}' */ +# define frozen_end_group (frozen_control_sequence+2) /* permanent `\.{\\endgroup}' */ +# define frozen_right (frozen_control_sequence+3) /* permanent `\.{\\right}' */ +# define frozen_fi (frozen_control_sequence+4) /* permanent `\.{\\fi}' */ +# define frozen_end_template (frozen_control_sequence+5) /* permanent `\.{\\endtemplate}' */ +# define frozen_endv (frozen_control_sequence+6) /* second permanent `\.{\\endtemplate}' */ +# define frozen_relax (frozen_control_sequence+7) /* permanent `\.{\\relax}' */ +# define end_write (frozen_control_sequence+8) /* permanent `\.{\\endwrite}' */ +# define frozen_dont_expand (frozen_control_sequence+9 ) /* permanent `\.{\\notexpanded:}' */ +# define frozen_primitive (frozen_control_sequence+11 ) /* permanent `\.{\\primitive}' */ +# define frozen_special (frozen_control_sequence+12 ) /* permanent `\.{\\special}' */ +# define frozen_null_font (frozen_control_sequence+13 ) /* permanent `\.{\\nullfont}' */ +# define font_id_base (frozen_null_font-font_base ) /* begins table of |number_fonts| permanent font identifiers */ +# define undefined_control_sequence (frozen_null_font+number_fonts) +# define glue_base (undefined_control_sequence+1) /* beginning of region 3 */ + +# define line_skip_code 0 /* interline glue if |baseline_skip| is infeasible */ +# define baseline_skip_code 1 /* desired glue between baselines */ +# define par_skip_code 2 /* extra glue just above a paragraph */ +# define above_display_skip_code 3 /* extra glue just above displayed math */ +# define below_display_skip_code 4 /* extra glue just below displayed math */ +# define above_display_short_skip_code 5 /* glue above displayed math following short lines */ +# define below_display_short_skip_code 6 /* glue below displayed math following short lines */ +# define left_skip_code 7 /* glue at left of justified lines */ +# define right_skip_code 8 /* glue at right of justified lines */ +# define top_skip_code 9 /* glue at top of main pages */ +# define split_top_skip_code 10 /* glue at top of split pages */ +# define tab_skip_code 11 /* glue between aligned entries */ +# define space_skip_code 12 /* glue between words (if not |zero_glue|) */ +# define xspace_skip_code 13 /* glue after sentences (if not |zero_glue|) */ +# define par_fill_skip_code 14 /* glue on last line of paragraph */ +# define math_skip_code 15 +# define thin_mu_skip_code 16 /* thin space in math formula */ +# define med_mu_skip_code 17 /* medium space in math formula */ +# define thick_mu_skip_code 18 /* thick space in math formula */ +# define glue_pars 19 /* total number of glue parameters */ + +# define skip_base (glue_base+glue_pars) /* table of |number_regs| ``skip'' registers */ +# define mu_skip_base (skip_base+number_regs) /* table of |number_regs| ``muskip'' registers */ +# define local_base (mu_skip_base+number_regs) /* beginning of region 4 */ + +# define par_shape_loc (local_base) /* specifies paragraph shape */ +# define output_routine_loc (local_base+1) /* points to token list for \.{\\output} */ +# define every_par_loc (local_base+2) /* points to token list for \.{\\everypar} */ +# define every_math_loc (local_base+3) /* points to token list for \.{\\everymath} */ +# define every_display_loc (local_base+4) /* points to token list for \.{\\everydisplay} */ +# define every_hbox_loc (local_base+5) /* points to token list for \.{\\everyhbox} */ +# define every_vbox_loc (local_base+6) /* points to token list for \.{\\everyvbox} */ +# define every_job_loc (local_base+7) /* points to token list for \.{\\everyjob} */ +# define every_cr_loc (local_base+8) /* points to token list for \.{\\everycr} */ +# define err_help_loc (local_base+9) /* points to token list for \.{\\errhelp} */ +# define every_eof_loc (local_base+10) /* points to token list for \.{\\everyeof} */ + +# define backend_toks_base (local_base+11) +# define backend_toks_last (local_base+20) + +# define toks_base (local_base+21) /* table of |number_regs| token list registers */ + +# define etex_pen_base (toks_base+number_regs) /* start of table of \eTeX's penalties */ +# define inter_line_penalties_loc (etex_pen_base) /* additional penalties between lines */ +# define club_penalties_loc (etex_pen_base+1) /* penalties for creating club lines */ +# define widow_penalties_loc (etex_pen_base+2) /* penalties for creating widow lines */ +# define display_widow_penalties_loc (etex_pen_base+3) /* ditto, just before a display */ +# define etex_pens (etex_pen_base+4) /* end of table of \eTeX's penalties */ +# define local_left_box_base (etex_pens) +# define local_right_box_base (local_left_box_base+1) +# define box_base (local_right_box_base+1) /* table of |number_regs| box registers */ +# define cur_font_loc (box_base+number_regs) /* internal font number outside math mode */ +# define internal_math_param_base (cur_font_loc+1 ) /* current math parameter data index */ +# define cat_code_base (internal_math_param_base+1) /* current category code data index */ +# define lc_code_base (cat_code_base+1) /* table of |number_chars| lowercase mappings */ +# define uc_code_base (lc_code_base+1) /* table of |number_chars| uppercase mappings */ +# define sf_code_base (uc_code_base+1) /* table of |number_chars| spacefactor mappings */ +# define math_code_base (sf_code_base+1) /* table of |number_chars| math mode mappings */ +# define int_base (math_code_base+1) /* beginning of region 5 */ + +# define pretolerance_code 0 /* badness tolerance before hyphenation */ +# define tolerance_code 1 /* badness tolerance after hyphenation */ +# define line_penalty_code 2 /* added to the badness of every line */ +# define hyphen_penalty_code 3 /* penalty for break after discretionary hyphen */ +# define ex_hyphen_penalty_code 4 /* penalty for break after explicit hyphen */ +# define club_penalty_code 5 /* penalty for creating a club line */ +# define widow_penalty_code 6 /* penalty for creating a widow line */ +# define display_widow_penalty_code 7 /* ditto, just before a display */ +# define broken_penalty_code 8 /* penalty for breaking a page at a broken line */ +# define bin_op_penalty_code 9 /* penalty for breaking after a binary operation */ +# define rel_penalty_code 10 /* penalty for breaking after a relation */ +# define pre_display_penalty_code 11 /* penalty for breaking just before a displayed formula */ +# define post_display_penalty_code 12 /* penalty for breaking just after a displayed formula */ +# define inter_line_penalty_code 13 /* additional penalty between lines */ +# define double_hyphen_demerits_code 14 /* demerits for double hyphen break */ +# define final_hyphen_demerits_code 15 /* demerits for final hyphen break */ +# define adj_demerits_code 16 /* demerits for adjacent incompatible lines */ +# define mag_code 17 /* magnification ratio */ +# define delimiter_factor_code 18 /* ratio for variable-size delimiters */ +# define looseness_code 19 /* change in number of lines for a paragraph */ +# define time_code 20 /* current time of day */ +# define day_code 21 /* current day of the month */ +# define month_code 22 /* current month of the year */ +# define year_code 23 /* current year of our Lord */ +# define show_box_breadth_code 24 /* nodes per level in |show_box| */ +# define show_box_depth_code 25 /* maximum level in |show_box| */ +# define hbadness_code 26 /* hboxes exceeding this badness will be shown by |hpack| */ +# define vbadness_code 27 /* vboxes exceeding this badness will be shown by |vpack| */ +# define pausing_code 28 /* pause after each line is read from a file */ +# define tracing_online_code 29 /* show diagnostic output on terminal */ +# define tracing_macros_code 30 /* show macros as they are being expanded */ +# define tracing_stats_code 31 /* show memory usage if \TeX\ knows it */ +# define tracing_paragraphs_code 32 /* show line-break calculations */ +# define tracing_pages_code 33 /* show page-break calculations */ +# define tracing_output_code 34 /* show boxes when they are shipped out */ +# define tracing_lost_chars_code 35 /* show characters that aren't in the font */ +# define tracing_commands_code 36 /* show command codes at |big_switch| */ +# define tracing_restores_code 37 /* show equivalents when they are restored */ +# define uc_hyph_code 38 /* hyphenate words beginning with a capital letter */ +# define output_penalty_code 39 /* penalty found at current page break */ +# define max_dead_cycles_code 40 /* bound on consecutive dead cycles of output */ +# define hang_after_code 41 /* hanging indentation changes after this many lines */ +# define floating_penalty_code 42 /* penalty for insertions heldover after a split */ +# define global_defs_code 43 /* override \.{\\global} specifications */ +# define cur_fam_code 44 /* current family */ +# define escape_char_code 45 /* escape character for token output */ +# define default_hyphen_char_code 46 /* value of \.{\\hyphenchar} when a font is loaded */ +# define default_skew_char_code 47 /* value of \.{\\skewchar} when a font is loaded */ +# define end_line_char_code 48 /* character placed at the right end of the buffer */ +# define new_line_char_code 49 /* character that prints as |print_ln| */ +# define language_code 50 /* current hyphenation table */ +# define left_hyphen_min_code 51 /* minimum left hyphenation fragment size */ +# define right_hyphen_min_code 52 /* minimum right hyphenation fragment size */ +# define holding_inserts_code 53 /* do not remove insertion nodes from \.{\\box255} */ +# define error_context_lines_code 54 /* maximum intermediate line pairs shown */ +# define local_inter_line_penalty_code 55 /* local \.{\\interlinepenalty} */ +# define local_broken_penalty_code 56 /* local \.{\\brokenpenalty} */ +# define no_local_whatsits_code 57 /* counts local whatsits */ +# define no_local_dirs_code 58 + +# define disable_lig_code 60 +# define disable_kern_code 61 +# define disable_space_code 62 +# define cat_code_table_code 63 +# define output_box_code 64 +# define cur_lang_code 65 /* current language id */ +# define ex_hyphen_char_code 66 +# define hyphenation_min_code 67 /* minimum word length */ +# define adjust_spacing_code 68 /* level of spacing adjusting */ +# define protrude_chars_code 69 /* protrude chars at left/right edge of paragraphs */ +# define output_mode_code 70 /* switch on PDF output if positive */ +# define draft_mode_code 71 +# define tracing_fonts_code 72 +# define tracing_assigns_code 73 /* show assignments */ +# define tracing_groups_code 74 /* show save/restore groups */ +# define tracing_ifs_code 75 /* show conditionals */ +# define tracing_scan_tokens_code 76 /* show pseudo file open and close */ +# define tracing_nesting_code 77 /* show incomplete groups and ifs within files */ +# define pre_display_direction_code 78 /* text direction preceding a display */ +# define last_line_fit_code 79 /* adjustment for last line of paragraph */ +# define saving_vdiscards_code 80 /* save items discarded from vlists */ +# define saving_hyph_codes_code 81 /* save hyphenation codes for languages */ +# define suppress_fontnotfound_error_code 82 /* suppress errors for missing fonts */ +# define suppress_long_error_code 83 /* suppress errors for missing fonts */ +# define suppress_ifcsname_error_code 84 /* suppress errors for failed \.{\\ifcsname} */ +# define suppress_outer_error_code 85 /* suppress errors for \.{\\outer} */ +# define suppress_mathpar_error_code 86 /* suppress errors for \.{\\par}} in math */ +# define math_eqno_gap_step_code 87 /* factor/1000 used for distance between eq and eqno */ +# define math_display_skip_mode_code 88 +# define math_scripts_mode_code 89 +# define math_nolimits_mode_code 90 +# define math_rules_mode_code 91 +# define math_rules_fam_code 92 +# define math_italics_mode_code 93 +# define synctex_code 94 /* is synctex file generation enabled ? */ +# define shape_mode_code 95 +# define first_valid_language_code 96 +# define hyphenation_bounds_code 97 +# define math_skip_mode_code 98 +# define math_pre_display_gap_factor_code 99 +# define hyphen_penalty_mode_code 100 +# define automatic_hyphen_penalty_code 101 +# define explicit_hyphen_penalty_code 102 +# define automatic_hyphen_mode_code 103 +# define compound_hyphen_mode_code 104 +# define break_after_dir_mode_code 105 +# define exception_penalty_code 106 + +# define pre_bin_op_penalty_code 107 +# define pre_rel_penalty_code 108 +# define math_penalties_mode_code 109 +# define math_delimiters_mode_code 110 +# define math_script_box_mode_code 111 +# define math_script_char_mode_code 112 +# define math_rule_thickness_mode_code 113 +# define math_flatten_mode_code 114 + +# define copy_lua_input_nodes_code 115 +# define suppress_primitive_error_code 116 +# define fixup_boxes_code 117 +# define glyph_dimensions_code 118 + +# define math_option_code 119 + +# define mathoption_int_base_code (math_option_code+1) /* one reserve */ +# define mathoption_int_last_code (mathoption_int_base_code+8) + +# define backend_int_base_code (mathoption_int_last_code+1) +# define backend_int_last_code (backend_int_base_code+32) /* we need some 25 but take some slack */ + +# define tex_int_pars (backend_int_last_code+1) /* total number of integer parameters */ + +# define mathoption_int_base (int_base+mathoption_int_base_code) +# define mathoption_int_last (int_base+mathoption_int_last_code) + +# define backend_int_base (int_base+backend_int_base_code) +# define backend_int_last (int_base+backend_int_last_code) + +# define page_direction_code (tex_int_pars) +# define body_direction_code (tex_int_pars+1) +# define par_direction_code (tex_int_pars+2) +# define text_direction_code (tex_int_pars+3) +# define math_direction_code (tex_int_pars+4) +# define line_direction_code (tex_int_pars+5) /* gets remapped so is no real register */ + +# define int_pars (tex_int_pars+5) /* total number of integer parameters */ + +# define dir_base (int_base+tex_int_pars) +# define count_base (int_base+int_pars) /* |number_regs| user \.{\\count} registers */ +# define attribute_base (count_base+number_regs) /* |number_attrs| user \.{\\attribute} registers */ +# define del_code_base (attribute_base+number_attrs) /* |number_chars| delimiter code mappings */ +# define dimen_base (del_code_base+1) /* beginning of region 6 */ + +# define par_indent_code 0 /* indentation of paragraphs */ +# define math_surround_code 1 /* space around math in text */ +# define line_skip_limit_code 2 /* threshold for |line_skip| instead of |baseline_skip| */ +# define hsize_code 3 /* line width in horizontal mode */ +# define vsize_code 4 /* page height in vertical mode */ +# define max_depth_code 5 /* maximum depth of boxes on main pages */ +# define split_max_depth_code 6 /* maximum depth of boxes on split pages */ +# define box_max_depth_code 7 /* maximum depth of explicit vboxes */ +# define hfuzz_code 8 /* tolerance for overfull hbox messages */ +# define vfuzz_code 9 /* tolerance for overfull vbox messages */ +# define delimiter_shortfall_code 10 /* maximum amount uncovered by variable delimiters */ +# define null_delimiter_space_code 11 /* blank space in null delimiters */ +# define script_space_code 12 /* extra space after subscript or superscript */ +# define pre_display_size_code 13 /* length of text preceding a display */ +# define display_width_code 14 /* length of line for displayed equation */ +# define display_indent_code 15 /* indentation of line for displayed equation */ +# define overfull_rule_code 16 /* width of rule that identifies overfull hboxes */ +# define hang_indent_code 17 /* amount of hanging indentation */ +# define h_offset_code 18 /* amount of horizontal offset when shipping pages out */ +# define v_offset_code 19 /* amount of vertical offset when shipping pages out */ +# define emergency_stretch_code 20 /* reduces badnesses on final pass of line-breaking */ +# define page_left_offset_code 21 +# define page_top_offset_code 22 +# define page_right_offset_code 23 +# define page_bottom_offset_code 24 +# define px_dimen_code 25 +# define page_width_code 26 /* page width of the output */ +# define page_height_code 27 /* page height of the output */ + +# define backend_dimen_base (dimen_base+28) +# define backend_dimen_last (dimen_base+37) + +# define dimen_pars (38) /* total number of dimension parameters */ + +# define scaled_base (dimen_base+dimen_pars) /* table of |number_regs| user-defined \.{\\dimen} registers */ +# define eqtb_size (scaled_base+biggest_reg) /* largest subscript of |eqtb| */ + +extern memory_word *eqtb; + +extern halfword eqtb_top; /* maximum of the |eqtb| */ + +extern quarterword xeq_level[(eqtb_size + 1)]; +extern void initialize_equivalents(void); + +# define eq_level_field(A) (A).hh.b1 +# define eq_type_field(A) (A).hh.b0 +# define equiv_field(A) (A).hh.rh + +# define eq_level(A) eq_level_field(eqtb[(A)]) /* level of definition */ +# define eq_type(A) eq_type_field(eqtb[(A)]) /* command code for equivalent */ +# define equiv(A) equiv_field(eqtb[(A)]) /* equivalent value */ + +# define set_eq_level(A,B) eq_level((A)) = (B) +# define set_eq_type(A,B) eq_type((A)) = (B) +# define set_equiv(A,B) equiv((A)) = (B) + +typedef struct save_record_ { + quarterword type_; + quarterword level_; + memory_word word_; +} save_record; + +extern save_record *save_stack; +extern int save_ptr; /* first unused entry on |save_stack| */ +extern int max_save_stack; /* maximum usage of save stack */ +extern quarterword cur_level; /* current nesting level for groups */ +extern group_code cur_group; /* current group type */ +extern int cur_boundary; /* where the current level begins */ + +# define save_type(A) save_stack[(A)].type_ /* classifies a |save_stack| entry */ +# define save_level(A) save_stack[(A)].level_ /* saved level for regions 5 and 6, or group code */ +# define save_value(A) save_stack[(A)].word_.cint /* |eqtb| location or token or |save_stack| location */ +# define save_word(A) save_stack[(A)].word_ /* |eqtb| entry */ + +/* + +We use the notation |saved(k)| to stand for an item that appears in location +|save_ptr+k| of the save stack. + +*/ + +# define saved_type(A) save_stack[save_ptr+(A)].type_ +# define saved_level(A) save_stack[save_ptr+(A)].level_ +# define saved_value(A) save_stack[save_ptr+(A)].word_.cint + +# define set_saved_record(A,B,C,D) do { \ + saved_type(A) = (quarterword)(B); \ + saved_level(A) = (quarterword)(C); \ + saved_value(A) = (D); \ + } while (0) + +# define restore_old_value 0 /* |save_type| when a value should be restored later */ +# define restore_zero 1 /* |save_type| when an undefined entry should be restored */ +# define insert_token 2 /* |save_type| when a token is being saved for later use */ +# define level_boundary 3 /* |save_type| corresponding to beginning of group */ +# define saved_line 4 +# define saved_adjust 5 +# define saved_insert 6 +# define saved_disc 7 +# define saved_boxtype 8 +# define saved_textdir 9 +# define saved_eqno 10 +# define saved_choices 11 +# define saved_math 12 +# define saved_boxcontext 13 +# define saved_boxspec 14 +# define saved_boxdir 15 +# define saved_boxattr 16 +# define saved_boxpack 17 +# define saved_attrlist 18 +# define saved_eqtb 19 + +extern void print_save_stack(void); + +# define int_par(A) eqtb[int_base+(A)].cint +# define dimen_par(A) eqtb[dimen_base+(A)].cint +# define loc_par(A) equiv(local_base+(A)) +# define glue_par(A) equiv(glue_base+(A)) + +typedef enum { + c_mathoption_old_code = 0, /* this one is stable */ + /* + c_mathoption_umathcode_meaning_code, + */ +} math_option_codes ; + +# define mathoption_int_par(A) eqtb[mathoption_int_base+(A)].cint + +/* if nonzero, this magnification should be used henceforth */ + +extern int mag_set; +extern void prepare_mag(void); + +/* + +@ Here are the group codes that are used to discriminate between different kinds +of groups. They allow \TeX\ to decide what special actions, if any, should be +performed when a group ends. \def\grp{\.{\char'173...\char'175}} + +Some groups are not supposed to be ended by right braces. For example, the `\.\$' +that begins a math formula causes a |math_shift_group| to be started, and this +should be terminated by a matching `\.\$'. Similarly, a group that starts with +\.{\\left} should end with \.{\\right}, and one that starts with \.{\\begingroup} +should end with \.{\\endgroup}. + +*/ + +typedef enum { + bottom_level = 0, /* group code for the outside world */ + simple_group, /* group code for local structure only */ + hbox_group, /* code for `\.{\\hbox}\grp' */ + adjusted_hbox_group, /* code for `\.{\\hbox}\grp' in vertical mode */ + vbox_group, /* code for `\.{\\vbox}\grp' */ + vtop_group, /* code for `\.{\\vtop}\grp' */ + align_group, /* code for `\.{\\halign}\grp', `\.{\\valign}\grp' */ + no_align_group, /* code for `\.{\\noalign}\grp' */ + output_group, /* code for output routine */ + math_group, /* code for, e.g., `\.{\char'136}\grp' */ + disc_group, /* code for `\.{\\discretionary}\grp\grp\grp' */ + insert_group, /* code for `\.{\\insert}\grp', `\.{\\vadjust}\grp' */ + vcenter_group, /* code for `\.{\\vcenter}\grp' */ + math_choice_group, /* code for `\.{\\mathchoice}\grp\grp\grp\grp' */ + semi_simple_group, /* code for `\.{\\begingroup...\\endgroup}' */ + math_shift_group, /* code for `\.{\$...\$}' */ + math_left_group, /* code for `\.{\\left...\\right}' */ + local_box_group, /* code for `\.{\\localleftbox...\\localrightbox}' */ + split_off_group, /* box code for the top part of a \.{\\vsplit} */ + split_keep_group, /* box code for the bottom part of a \.{\\vsplit} */ + preamble_group, /* box code for the preamble processing in an alignment */ + align_set_group, /* box code for the final item pass in an alignment */ + fin_row_group /* box code for a provisory line in an alignment */ +} tex_group_codes; + +typedef enum { + new_graf_par_code = 0, + local_box_par_code, + hmode_par_par_code, + penalty_par_code, + math_par_code, +} tex_par_codes ; + +typedef enum { + display_style = 0, /* |subtype| for \.{\\displaystyle} */ + cramped_display_style, /* |subtype| for \.{\\crampeddisplaystyle} */ + text_style, /* |subtype| for \.{\\textstyle} */ + cramped_text_style, /* |subtype| for \.{\\crampedtextstyle} */ + script_style, /* |subtype| for \.{\\scriptstyle} */ + cramped_script_style, /* |subtype| for \.{\\crampedscriptstyle} */ + script_script_style, /* |subtype| for \.{\\scriptscriptstyle} */ + cramped_script_script_style, /* |subtype| for \.{\\crampedscriptscriptstyle} */ +} math_style_subtypes; + +typedef enum { /* this could move to directions.h */ + dir_TLT = 0, + dir_TRT, + dir_LTL, + dir_RTT, +} dir_codes; + +# define max_group_code local_box_group /* which is wrong, but is what the web says */ + +extern int cur_cmd; /* current command set by |get_next| */ +extern halfword cur_chr; /* operand of current command */ +extern halfword cur_cs; /* control sequence found here, zero if none found */ +extern halfword cur_tok; /* packed representative of |cur_cmd| and |cur_chr| */ + +extern void show_cur_cmd_chr(void); + +extern void new_save_level(group_code c); /* begin a new level of grouping */ +extern void eq_destroy(memory_word w); /* gets ready to forget |w| */ +extern void eq_save(halfword p, quarterword l); /* saves |eqtb[p]| */ +extern void eq_define(halfword p, quarterword t, halfword e); /* new data for |eqtb| */ +extern void eq_word_define(halfword p, int w); +extern void geq_define(halfword p, quarterword t, halfword e); /* global |eq_define| */ +extern void geq_word_define(halfword p, int w); /* global |eq_word_define| */ +extern void save_for_after(halfword t); +extern void unsave(void); /* pops the top level off the save stack */ +extern void show_save_groups(void); + +# define level_zero 0 /* level for undefined quantities */ +# define level_one 1 /* outermost level for defined quantities */ + +extern void show_eqtb(halfword n); + +/* \csname \ifcsname */ + +extern halfword last_cs_name; + +/* + The *_par macros expand to the variables that are (in most cases) also accessible + at the users end. Most are registers but some are in the (stack) lists. + + More *_par will move here : there is no real need for thse macros but because there + were already a bunch and because they were defined all over the place we moved them + here. + +*/ + +#define space_skip_par glue_par(space_skip_code) +#define xspace_skip_par glue_par(xspace_skip_code) +#define math_skip_par glue_par(math_skip_code) +#define math_skip_mode int_par(math_skip_mode_code) + +#define pre_display_size_par dimen_par(pre_display_size_code) +#define display_width_par dimen_par(display_width_code) +#define display_indent_par dimen_par(display_indent_code) +#define math_surround_par dimen_par(math_surround_code) + +#define display_skip_mode_par int_par(math_display_skip_mode_code) +#define math_eqno_gap_step_par int_par(math_eqno_gap_step_code) + +#define body_direction_par int_par(body_direction_code) +#define page_direction_par int_par(page_direction_code) +#define par_direction_par int_par(par_direction_code) +#define text_direction_par int_par(text_direction_code) +#define math_direction_par int_par(math_direction_code) + +#define shape_mode_par int_par(shape_mode_code) +#define hyphenation_bounds_par int_par(hyphenation_bounds_code) +#define first_valid_language_par int_par(first_valid_language_code) + +#define hsize_par dimen_par(hsize_code) +#define vsize_par dimen_par(vsize_code) +#define hfuzz_par dimen_par(hfuzz_code) +#define vfuzz_par dimen_par(vfuzz_code) +#define hbadness_par int_par(hbadness_code) +#define vbadness_par int_par(vbadness_code) + +#define baseline_skip_par glue_par(baseline_skip_code) +#define par_indent_par dimen_par(par_indent_code) +#define hang_indent_par dimen_par(hang_indent_code) +#define hang_after_par int_par(hang_after_code) +#define left_skip_par glue_par(left_skip_code) +#define right_skip_par glue_par(right_skip_code) + +#define emergency_stretch_par dimen_par(emergency_stretch_code) +#define pretolerance_par int_par(pretolerance_code) +#define tolerance_par int_par(tolerance_code) +#define looseness_par int_par(looseness_code) +#define adjust_spacing_par int_par(adjust_spacing_code) +#define adj_demerits_par int_par(adj_demerits_code) +#define protrude_chars_par int_par(protrude_chars_code) +#define line_penalty_par int_par(line_penalty_code) +#define last_line_fit_par int_par(last_line_fit_code) +#define double_hyphen_demerits_par int_par(double_hyphen_demerits_code) +#define final_hyphen_demerits_par int_par(final_hyphen_demerits_code) +#define inter_line_penalty_par int_par(inter_line_penalty_code) +#define club_penalty_par int_par(club_penalty_code) +#define broken_penalty_par int_par(broken_penalty_code) +#define display_widow_penalty_par int_par(display_widow_penalty_code) +#define widow_penalty_par int_par(widow_penalty_code) +#define line_skip_limit_par dimen_par(line_skip_limit_code) + +#define delimiter_shortfall_par dimen_par(delimiter_shortfall_code) +#define null_delimiter_space_par dimen_par(null_delimiter_space_code) +#define script_space_par dimen_par(script_space_code) +#define max_depth_par dimen_par(max_depth_code) +#define box_max_depth_par dimen_par(box_max_depth_code) +#define split_max_depth_par dimen_par(split_max_depth_code) +#define overfull_rule_par dimen_par(overfull_rule_code) +#define box_max_depth_par dimen_par(box_max_depth_code) +#define top_skip_par glue_par(top_skip_code) +#define split_top_skip_par glue_par(split_top_skip_code) + +#define cur_fam_par int_par(cur_fam_code) +#define pre_display_direction_par int_par(pre_display_direction_code) +#define pre_display_penalty_par int_par(pre_display_penalty_code) +#define post_display_penalty_par int_par(post_display_penalty_code) + +#define cur_fam_par_in_range ((cur_fam_par>=0)&&(cur_fam_par<256)) + +#define local_inter_line_penalty_par int_par(local_inter_line_penalty_code) +#define local_broken_penalty_par int_par(local_broken_penalty_code) +#define local_left_box_par equiv(local_left_box_base) +#define local_right_box_par equiv(local_right_box_base) + +#define end_line_char_par int_par(end_line_char_code) +#define new_line_char_par int_par(new_line_char_code) +#define escape_char_par int_par(escape_char_code) + +#define end_line_char_inactive ((end_line_char_par < 0) || (end_line_char_par > 127)) + +#define delimiter_factor_par int_par(delimiter_factor_code) +#define bin_op_penalty_par int_par(bin_op_penalty_code) +#define rel_penalty_par int_par(rel_penalty_code) +#define pre_bin_op_penalty_par int_par(pre_bin_op_penalty_code) +#define pre_rel_penalty_par int_par(pre_rel_penalty_code) +#define math_penalties_mode_par int_par(math_penalties_mode_code) +#define math_delimiters_mode_par int_par(math_delimiters_mode_code) +#define math_script_box_mode_par int_par(math_script_box_mode_code) +#define math_script_char_mode_par int_par(math_script_char_mode_code) +#define math_rule_thickness_mode_par int_par(math_rule_thickness_mode_code) +#define math_flatten_mode_par int_par(math_flatten_mode_code) +#define null_delimiter_space_par dimen_par(null_delimiter_space_code) +#define disable_lig_par int_par(disable_lig_code) +#define disable_kern_par int_par(disable_kern_code) +#define disable_space_par int_par(disable_space_code) +#define math_scripts_mode_par int_par(math_scripts_mode_code) +#define math_nolimits_mode_par int_par(math_nolimits_mode_code) +#define math_italics_mode_par int_par(math_italics_mode_code) +#define math_rules_mode_par int_par(math_rules_mode_code) +#define math_rules_fam_par int_par(math_rules_fam_code) + +#define thin_mu_skip_par glue_par(thin_mu_skip_code) +#define med_mu_skip_par glue_par(med_mu_skip_code) +#define thick_mu_skip_par glue_par(thick_mu_skip_code) + +#define every_math_par equiv(every_math_loc) +#define every_display_par equiv(every_display_loc) +#define every_cr_par equiv(every_cr_loc) +#define every_hbox_par equiv(every_hbox_loc) +#define every_vbox_par equiv(every_vbox_loc) +#define every_eof_par equiv(every_eof_loc) +#define every_par_par equiv(every_par_loc) +#define err_help_par equiv(err_help_loc) + +#define no_local_whatsits_par int_par(no_local_whatsits_code) +#define no_local_dirs_par int_par(no_local_dirs_code) + +#define prev_depth_par cur_list.prev_depth_field +#define prev_graf_par cur_list.pg_field +#define tail_par cur_list.tail_field +#define head_par cur_list.head_field +#define mode_par cur_list.mode_field +#define dirs_par cur_list.dirs_field +#define space_factor_par cur_list.space_factor_field +#define incompleat_noad_par cur_list.incompleat_noad_field +#define mode_line_par cur_list.ml_field +#define aux_par cur_list.eTeX_aux_field +#define delim_par aux_par + +#define par_shape_par_ptr equiv(par_shape_loc) +#define inter_line_penalties_par_ptr equiv(inter_line_penalties_loc) +#define club_penalties_par_ptr equiv(club_penalties_loc) +#define widow_penalties_par_ptr equiv(widow_penalties_loc) +#define display_widow_penalties_par_ptr equiv(display_widow_penalties_loc) + +#define page_width_par dimen_par(page_width_code) +#define page_height_par dimen_par(page_height_code) +#define h_offset_par dimen_par(h_offset_code) +#define v_offset_par dimen_par(v_offset_code) +#define page_left_offset_par dimen_par(page_left_offset_code) +#define page_top_offset_par dimen_par(page_top_offset_code) +#define page_right_offset_par dimen_par(page_right_offset_code) +#define page_bottom_offset_par dimen_par(page_bottom_offset_code) +#define px_dimen_par dimen_par(px_dimen_code) + +#define max_dead_cycles_par int_par(max_dead_cycles_code) +#define output_box_par int_par(output_box_code) +#define holding_inserts_par int_par(holding_inserts_code) +#define output_routine_par equiv(output_routine_loc) +#define floating_penalty_par int_par(floating_penalty_code) + +#define mag_par int_par(mag_code) + +#define global_defs_par int_par(global_defs_code) +#define cat_code_table_par int_par(cat_code_table_code) +#define saving_vdiscards_par int_par(saving_vdiscards_code) + +#define tracing_output_par int_par(tracing_output_code) +#define tracing_stats_par int_par(tracing_stats_code) +#define tracing_online_par int_par(tracing_online_code) +#define tracing_paragraphs_par int_par(tracing_paragraphs_code) +#define tracing_nesting_par int_par(tracing_nesting_code) +#define tracing_lost_chars_par int_par(tracing_lost_chars_code) +#define tracing_scan_tokens_par int_par(tracing_scan_tokens_code) +#define tracing_ifs_par int_par(tracing_ifs_code) +#define tracing_commands_par int_par(tracing_commands_code) +#define tracing_macros_par int_par(tracing_macros_code) +#define tracing_assigns_par int_par(tracing_assigns_code) +#define tracing_fonts_par int_par(tracing_fonts_code) +#define tracing_pages_par int_par(tracing_pages_code) +#define tracing_restores_par int_par(tracing_restores_code) +#define tracing_groups_par int_par(tracing_groups_code) + +#define show_box_depth_par int_par(show_box_depth_code) +#define show_box_breadth_par int_par(show_box_breadth_code) + +#define pausing_par int_par(pausing_code) + +#define suppress_outer_error_par int_par(suppress_outer_error_code) +#define suppress_long_error_par int_par(suppress_long_error_code) +#define suppress_mathpar_error_par int_par(suppress_mathpar_error_code) +#define suppress_fontnotfound_error_par int_par(suppress_fontnotfound_error_code) +#define suppress_ifcsname_error_par int_par(suppress_ifcsname_error_code) +#define suppress_primitive_error_par int_par(suppress_primitive_error_code) +#define error_context_lines_par int_par(error_context_lines_code) +#define copy_lua_input_nodes_par int_par(copy_lua_input_nodes_code) + +#define math_old_par mathoption_int_par(c_mathoption_old_code) + +/* +#define math_umathcode_meaning_par mathoption_int_par(c_mathoption_umathcode_meaning_code) +*/ + +#define math_pre_display_gap_factor_par int_par(math_pre_display_gap_factor_code) + +#define time_par int_par(time_code) +#define day_par int_par(day_code) +#define month_par int_par(month_code) +#define year_par int_par(year_code) + +#define output_mode_par int_par(output_mode_code) +#define draft_mode_par int_par(draft_mode_code) +#define synctex_par int_par(synctex_code) + +#define language_par int_par(language_code) +#define uc_hyph_par int_par(uc_hyph_code) +#define left_hyphen_min_par int_par(left_hyphen_min_code) +#define right_hyphen_min_par int_par(right_hyphen_min_code) +#define ex_hyphen_char_par int_par(ex_hyphen_char_code) +#define hyphen_penalty_par int_par(hyphen_penalty_code) +#define ex_hyphen_penalty_par int_par(ex_hyphen_penalty_code) +#define default_hyphen_char_par int_par(default_hyphen_char_code) +#define default_skew_char_par int_par(default_skew_char_code) +#define saving_hyph_codes_par int_par(saving_hyph_codes_code) + +#define hyphen_penalty_mode_par int_par(hyphen_penalty_mode_code) +#define automatic_hyphen_penalty_par int_par(automatic_hyphen_penalty_code) +#define explicit_hyphen_penalty_par int_par(explicit_hyphen_penalty_code) +#define automatic_hyphen_mode_par int_par(automatic_hyphen_mode_code) +#define compound_hyphen_mode_par int_par(compound_hyphen_mode_code) +#define break_after_dir_mode_par int_par(break_after_dir_mode_code) +#define exception_penalty_par int_par(exception_penalty_code) + +#define cur_lang_par int_par(cur_lang_code) +#define cur_font_par equiv(cur_font_loc) + +#define fixup_boxes_par int_par(fixup_boxes_code) +#define glyph_dimensions_par int_par(glyph_dimensions_code) + +/* */ + +#define math_use_current_family_code 7 + +/* + #define box(A) equiv(box_base+(A)) + #define box(A) eqtb[box_base+(A)].hh.rh +*/ + +#define attribute(A) equiv(attribute_base+(A)) +#define box(A) equiv(box_base+(A)) +#define count(A) equiv(count_base+(A)) +#define dimen(A) equiv(scaled_base+(A)) +#define mu_skip(A) equiv(mu_skip_base+(A)) +#define skip(A) equiv(skip_base+(A)) +#define toks(A) equiv(toks_base+(A)) + +#define get_tex_attribute_register(j) attribute(j) +#define get_tex_box_register(j) box(j) +#define get_tex_count_register(j) count(j) +#define get_tex_dimen_register(j) dimen(j) +#define get_tex_mu_skip_register(j) mu_skip(j) +#define get_tex_skip_register(j) skip(j) + +#define font_id_text(A) cs_text(font_id_base+(A)) + +#define end_template_token (cs_token_flag+frozen_end_template) +#define end_write_token (cs_token_flag+end_write) + +/* for now here */ + +#define xspace_skip_subtype (xspace_skip_code + 1) +#define space_skip_subtype (space_skip_code + 1) + +/* + +hyphen_penalty_mode_par automatic_disc (-) explicit_disc (\-) +--------------------------------------------------------------------------------- +0 (default) ex_hyphen_penalty_par ex_hyphen_penalty_par +1 hyphen_penalty_par hyphen_penalty_par +2 ex_hyphen_penalty_par hyphen_penalty_par +3 hyphen_penalty_par ex_hyphen_penalty_par +4 automatic_hyphen_penalty_par explicit_disc_penalty_par +5 ex_hyphen_penalty_par explicit_disc_penalty_par +6 hyphen_penalty_par explicit_disc_penalty_par +7 automatic_hyphen_penalty_par ex_hyphen_penalty_par +8 automatic_hyphen_penalty_par hyphen_penalty_par +*/ + +#define set_automatic_disc_penalty(n) \ + switch (hyphen_penalty_mode_par) { \ + case 0: \ + case 2: \ + case 5: \ + /* we take ex_hyphen_penalty */ \ + disc_penalty(n) = ex_hyphen_penalty_par; \ + break; \ + case 1: \ + case 3: \ + case 6: \ + /* we take hyphen_penalty */ \ + disc_penalty(n) = hyphen_penalty_par; \ + break; \ + case 4: \ + case 7: \ + case 8: \ + /* we take automatic_hyphen_penalty */ \ + disc_penalty(n) = automatic_hyphen_penalty_par; \ + break; \ + default: \ + /* what we've done since the beginning */ \ + disc_penalty(n) = ex_hyphen_penalty_par; \ + break; \ + } + +#define set_explicit_disc_penalty(n) \ + switch (hyphen_penalty_mode_par) { \ + case 0: \ + case 3: \ + case 7: \ + /* we take ex_hyphen_penalty */ \ + disc_penalty(n) = ex_hyphen_penalty_par; \ + break; \ + case 1: \ + case 2: \ + case 8: \ + /* we take hyphen_penalty */ \ + disc_penalty(n) = hyphen_penalty_par; \ + break; \ + case 4: \ + case 5: \ + case 6: \ + /* we take automatic_hyphen_penalty */ \ + disc_penalty(n) = explicit_hyphen_penalty_par; \ + break; \ + default: \ + /* what we've done since the beginning */ \ + disc_penalty(n) = ex_hyphen_penalty_par; \ + break; \ + } + +#endif -- cgit v1.2.3